HYMENOPTERA. 61 



nervures black. Abdomen : all the segments with a fascia of 

 silvery-white hairs at their basal and apical margins, the fasciae 

 attenuated in the middle, the space between smooth, shining, 

 and with a few scattered punctures ; the apical segment longi- 

 udinally sulcated, its posterior margin rounded and entire. 



2. Rhagigaster apterus. 



Bethylus apterus, Fabr. Syst. Piez. p. 238. 7 ? . 

 Rhagigaster? apterus, Westw. Arc. Ent. ii. 106. 9. 



Hab. New South Wales. 



3. Rhagigaster unicolor. B.M. 



Rhagigaster unicolor, Guer. Voy. Coq. Zool. ii. 214 (1830) S • 

 Diamma ephippiger, Guer. Voy. de VAstrol. p. 235 $ ; Mag. 



Zool. (1842) pi. 103. f. 1, 6. 

 Thynnus unicolor, Klug, Berl. Abhandl. (1842) 23. 18. 

 Rhagigaster ephippiger, Westw. Arc. Ent. ii. 105. 



Hab. Tasmania (Port Jackson). 



4. Rhagigaster mandibularis. B.M. 



Rhagigaster mandibularis, Westw. Arc. Ent. ii. 105. 3 $ . 

 Hab. Port Philip. 



5. Rhagigaster Morio. B.M. 

 Rhagigaster Morio, Westw. Arc. Ent. ii. 105. 4 S . 



Hab. Australia. 



6. Rhagigaster binotatus. B.M. 

 Rhagigaster binotatus, Westw. Arc. Ent. ii. 105. 7 ? • 



Hab. Tasmania. 



7. Rhagigaster analis. 



Rhagigaster analis, Westw. Arc. Ent. ii. 106. 8 $ . 

 Hab. Australia (King George's Sound). 



8. Rhagigaster? ruficornis. 



Myzine ruficornis, Guer. Prodr. Mon. Myzines, p. 11. 

 Thynnus ruficornis, Guer. Mag. Zool. pi. 99. 

 Rhagigaster? ruficornis, Westw. Arc. Ent. ii. 106c?. 



Hab. Arabia. 



